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# mypy: disallow-untyped-defs
"""
Script used to generate a Markdown file containing only the changelog entries of a specific pytest release, which
is then published as a GitHub Release during deploy (see workflows/deploy.yml).
The script requires ``pandoc`` to be previously installed in the system -- we need to convert from RST (the format of
our CHANGELOG) into Markdown (which is required by GitHub Releases).
Requires Python3.6+.
"""
from pathlib import Path
import re
import sys
from typing import Sequence
import pypandoc
def extract_changelog_entries_for(version: str) -> str:
p = Path(__file__).parent.parent / "doc/en/changelog.rst"
changelog_lines = p.read_text(encoding="UTF-8").splitlines()
title_regex = re.compile(r"pytest (\d\.\d+\.\d+\w*) \(\d{4}-\d{2}-\d{2}\)")
consuming_version = False
version_lines = []
for line in changelog_lines:
m = title_regex.match(line)
if m:
# Found the version we want: start to consume lines until we find the next version title.
if m.group(1) == version:
consuming_version = True
# Found a new version title while parsing the version we want: break out.
elif consuming_version:
break
if consuming_version:
version_lines.append(line)
return "\n".join(version_lines)
def convert_rst_to_md(text: str) -> str:
result = pypandoc.convert_text(
text, "md", format="rst", extra_args=["--wrap=preserve"]
)
assert isinstance(result, str), repr(result)
return result
def main(argv: Sequence[str]) -> int:
if len(argv) != 3:
print("Usage: generate-gh-release-notes VERSION FILE")
return 2
version, filename = argv[1:3]
print(f"Generating GitHub release notes for version {version}")
rst_body = extract_changelog_entries_for(version)
md_body = convert_rst_to_md(rst_body)
Path(filename).write_text(md_body, encoding="UTF-8")
print()
print(f"Done: {filename}")
print()
return 0
if __name__ == "__main__":
sys.exit(main(sys.argv))
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